Rotary pump



'2 Sheets-Sheet 1.

(NoA Model.)

A. WARTH. ROTARY PUMP.

Patented A (No Model.) 2 Sheets-Sheet 2.

A. WARTH.

ROTARY PUMP.

No. 297,478. Patented Apr. 22, 1884.

n. Paws. mmmwumpm. wmingm... n c.

i. through which extends the shaft C.

Unirse, l ,Stearns Farmer @trier-3.

l ALBII# VVARTH, OF STAPLETON, NEV YORK.

ROTARY PU lvl P.

SPECIFICATION forming part of Letters Patent No. 297,478, dated April 22, 1884:. Application filed July 26, 1h83. (No model.)

To @ZZ whom it may colcezn, :i

Be it known that I, Amun hVlinrI-r, of Std,- pleton, in the county of Itichmonc' and State of New York, have made an invention of certain new and useful Improvements in Rotary Pumps, which are applicable also to rotary engines; and I do hereby declare that the following, in connection with the accompanying drawings, is ai'ull, clear, and exact description and specification of the same.

This invention relates to improvements in that class of rotary pumps or engines in which an oscillating valve is combined with a rota-ry piston and a cam which operates the valve.

The invention consists in the novel combination of devices hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure l represents a side view, partly in section. Fig. 2 is a transverse section in the planexx, Fig'. l. Fig. Sis an end View. Figs. 4, 5, 6, 7, and 8 show dii-'ferent positions of the valve, the piston-wheel, and the valve-gear.

Siniilarletters indicate co 'responding parts. I

In the following description I shall describe; my apparatus when used as a rotary pump; but, it should be understood that my apparatus can also be used with advantage as a rotary en-| gine driven by steam, compressed; lair, or any y other medium suitable for the purpose.

In the accompanying drawings, the letter A designates the cylinder, the heads B B of which are provided with openings and stuting-boxes, This shaft has its bearings in pillow-blocks D D, situated at the opposite ends of the cylinder, and in the interior of the cylinder is situated the piston-Wheel E, which is firmly mounted on the shaft C. Said piston-wheel extends throughbut the entire length of the cylinder, and it is provided with a projection or rib, a, which I denominate the piston/7v the outer surface of which is a cylindrical curve ot' the same diameter, or nearly so, as the bore of the cylinder, so that when the pistonmwheel revolves, the outer surface oi' the piston works in close contact with the inner surface of the cylinder. The shalt C is iittedl with a beltpulley, Q, to which a belt is applied for the .Find cans- 'ilection of purpose of driving the piston-wheel ing it to rotate, preferably, inthe d the arrow applied to the piston-wheel in Fig. 2; but any other suitable means may be used for the same purpose. The cylinder communicates through an opening, b,with the valvechamber F. In the example shown in the drawings the valve-chamber and the cylinder are formed in one and the same piece, and the heads B B are connnon to both. rlhe opening b extends from one head ot' the cylinder to the 6o other, and the valve-chamber communicates through an opening, c, with the supply-pipe G, and through an opening, d, with the discharge-pipe il, but, it' desired, the valveehai'nber, with its outlets c d, may be formed 65 separately 'from the cylinder, and may be secured to the cylinder by proper means; or,

if desired, the cylinder as well as the Valvechamber may be made ot' boiler-iron or other suitable material. From the discharge-pipe 7o II extends a channel, I, to an opening, J, to which an air-chamber or a pressuregage may be applied. The valve-chamber has a cylindrical bore, into which is fitted the valve K, which is mounted on a rock-shaft, L, which has its bearings in the pillow-blocks D D,Fig.1. The valve is provided with two wings, cf, the outer surfaces oi' which are turned olf, so as to iit the inner surface of the bore of the Valvechamber, and the said valve is so operated that 8o during a large part oi the revolution of the piston-whcel one of said wings is in contact,

or nearly so, with the cylindrical surface of said pistoirwhecl, as shown in Fig. 2. This valve thus also acts as an abutment to the pis- 8 5 ton-wheel, and I will therefore designate it as an "abutment-valve.l As both wings of the abutmentyalve are subjected to equal pressnre, and they are at opposite sides of the valve-shaft, the pressure against one Wing is 9o balanced by the pressure agaii'ist the other, and consequently the abutment-valve can be oscill-.ited freely.

The abutment-valve l is combined with the piston-wheel E by means which impart to the 95 said valve an oscillating motion, so that the valve-wing c is moved out of the way of the piston a when the latter is passingthe valve K, and at thesame time the other valve-wing, is moved to close the opening or port c. The 10o means which I use for 'this purpose, and which I have represented in the drawings, consist 0i' form oi' a cani-groove, and on the lever N is secured a roller-stud, h, which engages with said cani-groove. A simple peripheral cam may, however, be used,in which case the rollerstud h isheld in contact with the surface of the cam by a spring, 'L'. Il' the shaft C revolves in the direction of arrow l, Figs. 2 to 7, water is drawn in through the pipe (i and the water in front oi' the piston a, is driven out through the pipe l i. The cam M is made preferably of such i'orin that the abutn'lent-valvc reniainsstationary until the piston a has reached the position shown in Fig. S; but when thcpiston reaches this position the abutmentvalve begins to move until it reaches a position slightlyl beyoml that shown in Fig.' 6, so as to allow the piston to pass beneath it-,wheu it gradually returns until it again assumes the position shown in Figs. 2 and S. The acting surface of the valve-cani l\'[ and the curvature of the periphery of the piston are preferably such that during the entire motion ofthe abutment-valve the su rl'ace of the wing e remains in contact, lor nearly so, with the piston-wheel or with the piston, the valve immediately beginning to move backward or return when thc piston has cleared the opening b, as shown in Fig. 6, s that there is no free communication at any time between the supply-pipe G and the discharge-pipe H. If the motion of the shaft C be reversed, no change takes place, ex-

cept that the water is drawn in through the pipe H and discharged through the pipe G. If steam or compressed air is admitted through the pipe G, the piston-wheel is caused to revolve in the direction of arrow 1, and the opening cl forms the exhaust-port.

I am. aware that it is not broadly new to combine an oscillating valve with a pistonwheel and operating-cam, and such, therefore, I do not claim.

XVhat I claim new, and desire to secure by Letters Patent, is-

1. The combination of the cylinder, the piston-wheel and piston fitted to revolve within the cylinder, the cylindrical valve-chamber communicatngpvithpthe cylinder and with the supply and discharge pipes, the oscillating abutment-valve balanced within the valvechamber, and the cam at the outside of the cylinder for oscillating the valve, substantially as describedL 2. The combination of the cylinder, the pistonwheel and piston fitted to revolve Within the cylinder, the cylindrical valve-chamber communicating with the cylinder and having the opposite supply and discharge ports, the oscillating abutment-valve arranged in the valve-chamber and composed ofthe oppositelyprojecting wings, said valve being balanced in the valve-chamber by the pressure against one wing being balanced by the pressure against thc other wing, and the cam outside of the cylinder, by which motion is imparted to the abutment-valve, substantially as described.

In testimony whereof Ihave hereunto set my hand and seal in the presence of two subscribing` witnesses.

ALBIN WARTH. [L s] Vituesses: l il GHAs. WVAn'LnRs, E. F. KASTENHUBER. 

